Title:
LOCK
Document Type and Number:
WIPO Patent Application WO2001069015
Kind Code:
A3
Abstract:
A lock for a door (10) comprises a casing (11), a bolt (55) operable to extend from or retract into the casing, a pivoted operating handle (36) operable at one side of the door to retract the bolt, lock means (28) for key operation at the other side of the door, and blocking means (81) to prevent operation of the handle to retract the bolt. In a locked closed position of the door, the bolt (55) is extended, and with the blocking means operated, key operation of the exterior lock means (28) both retracts the bolt and also de-actuates the blocking means. At the inside of the door further key operable lock means (39, 40) are provided solely to operate and, if required, to de-actuate, the blocking means.
Inventors:
COWPER BRIAN EDWARD (GB)
Application Number:
PCT/GB2001/000735
Publication Date:
December 20, 2001
Filing Date:
February 22, 2001
Export Citation:
Assignee:
BANHAM PATENT LOCKS LTD (GB)
COWPER BRIAN EDWARD (GB)
COWPER BRIAN EDWARD (GB)
International Classes:
E05B1/00; E05B9/08; E05B63/22; E05B13/00; E05B15/10; E05B63/00; E05B7/00; E05B15/00; E05B15/02; E05B17/20; E05B63/18; (IPC1-7): E05B13/00; E05B9/08; E05B63/00
Foreign References:
| US4709566A | 1987-12-01 | |||
| US2651934A | 1953-09-15 | |||
| US4563885A | 1986-01-14 | |||
| US5794467A | 1998-08-18 | |||
| US4732418A | 1988-03-22 | |||
| GB2268221A | 1994-01-05 | |||
| GB2142688A | 1985-01-23 | |||
| FR2626307A1 | 1989-07-28 |
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